How Safe Are Dermal Filler Injections

Booking filler usually starts with the calendar: a wedding, a trip, a season spent mostly outdoors. Safety questions belong in that same planning, and they are easier to ask before an appointment than during one.

What follows draws on what the American Society for Dermatologic Surgery, the U.S. Food and Drug Administration and the American Academy of Dermatology say about dermal filler risks, who should inject them and what to tell a provider beforehand. It does not rank any season or product as safer, and it does not replace an examination by a licensed clinician.

Start with the calendar, then the questions

Climate and season reach into filler planning through ordinary things: time outdoors, sun exposure, travel and events on either side of a treatment date. None of the sources used here says that one season is safer than another, so timing is best treated as a question for your provider and not as a rule. Say what is on your calendar and ask whether it should change the date.

A plastic surgery society's overview of dermal fillers is a sensible place to read up on the treatment before you compare it with what your provider tells you. Ask about any difference you notice.

What one long-running review of outcomes reports

The American Society for Dermatologic Surgery describes a retrospective analysis of 7,659 patient outcomes spanning 11 years for three board certified dermatologists. It reports that only four serious adverse events were identified between January 2009 and August 2020, and that all resolved after treatment without long-term effects.

Read that figure for what it is. It covers the patients of three board certified dermatologists, so it describes those practices and not every clinic. It does not tell you your own odds, and it does not promise that nothing will go wrong. It is a reason to ask any provider how often complications happen in their practice and what they do when one does.

Common side effects and how long they last

The U.S. Food and Drug Administration lists the common risks of dermal fillers as bruising, redness, swelling, pain, tenderness, itching and rash, along with difficulty performing activities, which it says was observed only when filler was injected into the back of the hand.

The American Academy of Dermatology describes redness, swelling, tenderness and occasional bruising as minor, temporary side effects at the injection site, and says they tend to clear within 7 to 14 days, if not earlier.

The two lists overlap, so the practical question is not whether side effects can happen but which ones to expect and when to call. Ask your provider what is normal for your treatment area, what is not, and who to contact if you are unsure. A dermatology society's consumer explainer on filler safety is a useful companion to that conversation.

Rarer problems, and the one regulators single out

The U.S. Food and Drug Administration lists less common risks that include inflammation such as swelling or redness near the injection site following viral or bacterial illnesses or infections, vaccinations, or dental procedures. It also lists raised bumps in or under the skin (nodules or granulomas) that may need treatment with injections, oral antibiotics, or surgical removal, along with infection, open or draining wounds, a sore at the injection site, allergic reaction and necrosis (tissue death).

The U.S. Food and Drug Administration calls accidental injection into a blood vessel the most serious risk associated with dermal fillers. It says filler that enters a blood vessel can cause skin necrosis (death of tissue), stroke, or blindness, and that while the chances of this happening are low, the resulting complications can be serious and may be permanent.

The list points to a pair of practical steps. Illness, vaccinations and dental work are all tied to inflammation near the injection site in that list, so mention any that are recent or coming up when you book. And because the most serious risk is rare but severe, it makes the choice of injector matter more, which is the next question.

Why the injector matters

The American Academy of Dermatology says serious side effects are more likely when the person injecting the filler does not have adequate medical training and experience.

Ask who will inject, what training and experience they have, and how often they perform the treatment you are considering. Ask what happens if a problem appears after you leave the office. A clear, specific answer is a better sign than a general reassurance.

Fillers sold straight to the public

The U.S. Food and Drug Administration also warns against buying or using lip or facial fillers that are sold directly to the public. It says they are not FDA approved and may be contaminated with chemicals and infectious organisms.

The American Society for Dermatologic Surgery adds that, as a result of its advocacy effort, the U.S. Food and Drug Administration later issued a safety communication to "never buy dermal fillers on the internet. They may be fake, contaminated or harmful."

None of the sources offers a cheaper route around a trained injector. The U.S. Food and Drug Administration's consumer update on filler do's and don'ts is where its warnings on filler are collected.

What to tell your provider before treatment

The American Academy of Dermatology says it is essential to tell your dermatologist about all medical conditions before getting a filler, and especially about allergies, a bleeding disorder, cold sore breakouts, a heart condition, previous cosmetic treatment (mention other injections and implants) and easily irritated skin.

Write the list down before you go so nothing is left out in the room. Add what the calendar holds as well: a trip, a stretch of heavy time outdoors, an event. Your provider can only plan around what they know.

Taking the questions with you

Safety with fillers comes down to a handful of questions asked early. Which product will be used, and why for this area? Who is injecting, and with what training? What is normal afterward, and when should you call? What do the next few weeks of your calendar look like, and does any of it change the date?

If you want a broader view of the treatment to read before you book, a dermatology society's page on dermal fillers is a reasonable next stop. Then take your questions to a licensed clinician who can examine you.